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WAEC Biology 2013 Question 29

Question 29

Respiration

The name of the enzyme that catalyses the conversion of glucose to glucose-6-phosphate at the beginning of glycolysis is

  1. A.phospho-fructokinase.
  2. B.glucose isomerase.
  3. C.hexokinase.
  4. D.glucose-6-kinase.
Show the answer and explanation

Answer: C (hexokinase.)

Explanation

Hexokinase adds a phosphate from ATP to glucose, forming glucose-6-phosphate.